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Mobile Information Systems
Volume 2016 (2016), Article ID 5894752, 10 pages
http://dx.doi.org/10.1155/2016/5894752
Research Article

A Categorized Resource Sharing Mechanism for Device-to-Device Communications in Cellular Networks

1University of Electronic Science and Technology of China, Chengdu, China
2Dalian University of Technology, Dalian, China
3Department of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN, USA

Received 12 July 2016; Revised 30 September 2016; Accepted 24 October 2016

Academic Editor: Piotr Zwierzykowski

Copyright © 2016 Jie Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Device-to-Device (D2D) communications are considered one of the key technologies for 5G wireless communication systems. In this paper, a resource sharing mechanism, which applies different policies for different cases (thus being categorized), is proposed. In this scheme, all D2D pairs are divided into three groups by comparing the minimum transmit power with the maximum transmit power of each cellular UE. The proposed mechanism enables multiple D2D pairs in the second group to share the resource with cellular user equipment (UE) simultaneously, by adjusting the transmit powers of these D2D transmitters. At the same time, D2D pairs in the first group and the third group share resource with cellular UE based on the transmit power minimization principle. Simulation results show that the proposed scheme can achieve relatively higher network throughput and lower transmit power consumption of the D2D system.